e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7

General

Target

e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe
Size

225KB
MD5

1f7967917ae0b3ceccc0d63e2f249200
SHA1

e470fb1cf95badc7322b33a069993dc7e2be7185
SHA256

e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7
SHA512

d7df85daf9c68c62e17ee4065b1fcf27673f43502ed770a730c8f1328ea0a62577d5f1210db6ff9c5558c5750cce6ed59169fe1f0c41734b0db7ba07b9952955
SSDEEP

3072:+Oq9Zyvu1mFNPXmlRroxqT9S2c7gcPOLm28rZzAYoDPHYmFcAti2D:Iu4mFh+9S2c7xomHdNIY8cA02

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1628	RUNDLL32.EXE

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
4092	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\2d6c60610fb651f9e704c57a6bbdb40b.exe	RUNDLL32.EXE
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\2d6c60610fb651f9e704c57a6bbdb40b.exe	RUNDLL32.EXE

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2d6c60610fb651f9e704c57a6bbdb40b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RUNDLL32.EXE\" .."	RUNDLL32.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\2d6c60610fb651f9e704c57a6bbdb40b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RUNDLL32.EXE\" .."	RUNDLL32.EXE

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 37 IoCs

pid	Process
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE
1628	RUNDLL32.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1628	RUNDLL32.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3632 wrote to memory of 1628	3632	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe	82
PID 3632 wrote to memory of 1628	3632	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe	82
PID 3632 wrote to memory of 1628	3632	e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe	82
PID 1628 wrote to memory of 4092	1628	RUNDLL32.EXE	83
PID 1628 wrote to memory of 4092	1628	RUNDLL32.EXE	83
PID 1628 wrote to memory of 4092	1628	RUNDLL32.EXE	83

C:\Users\Admin\AppData\Local\Temp\e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe
"C:\Users\Admin\AppData\Local\Temp\e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3632
- C:\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE
  "C:\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1628
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE" "RUNDLL32.EXE" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4092

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE

Filesize
225KB

MD5
1f7967917ae0b3ceccc0d63e2f249200

SHA1
e470fb1cf95badc7322b33a069993dc7e2be7185

SHA256
e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7

SHA512
d7df85daf9c68c62e17ee4065b1fcf27673f43502ed770a730c8f1328ea0a62577d5f1210db6ff9c5558c5750cce6ed59169fe1f0c41734b0db7ba07b9952955

Download Submit
C:\Users\Admin\AppData\Local\Temp\RUNDLL32.EXE

Filesize
225KB

MD5
1f7967917ae0b3ceccc0d63e2f249200

SHA1
e470fb1cf95badc7322b33a069993dc7e2be7185

SHA256
e5bc458157486d1e0a7586644cbbb94587b95c29baabb3cddbc8ca2ce17eb1a7

SHA512
d7df85daf9c68c62e17ee4065b1fcf27673f43502ed770a730c8f1328ea0a62577d5f1210db6ff9c5558c5750cce6ed59169fe1f0c41734b0db7ba07b9952955

Download Submit
C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch

Filesize
514B

MD5
762b627d707999874d1f5f88bd46dc05

SHA1
8ba1defe0e2c3468254604d0455221cfe9d34a51

SHA256
8b1e8df37059ab5d3400defc7308fd948ec6eb086499527f0a3bd5968a23ec15

SHA512
81e5a506fdd923dc418aed0e1b778da8029d51d3b7cab975de81238efac5a9f73461ebe6712b219c52bcb72bea5483f1b9be74352f606a9559d7eb1d4440f1bf

Download Submit
C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch

Filesize
514B

MD5
762b627d707999874d1f5f88bd46dc05

SHA1
8ba1defe0e2c3468254604d0455221cfe9d34a51

SHA256
8b1e8df37059ab5d3400defc7308fd948ec6eb086499527f0a3bd5968a23ec15

SHA512
81e5a506fdd923dc418aed0e1b778da8029d51d3b7cab975de81238efac5a9f73461ebe6712b219c52bcb72bea5483f1b9be74352f606a9559d7eb1d4440f1bf

Download Submit
memory/1628-141-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/1628-142-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/3632-132-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/3632-133-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download
memory/3632-139-0x0000000075490000-0x0000000075A41000-memory.dmp

Filesize
5.7MB

Download

Analysis

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